Why does a call go directly to voicemail

Look for the icon that looks like a crescent moon — this is the Do Not Disturb icon. The icon should be grayed out, but if it's illuminated white, this means that you have Do Not Disturb on. Tap the icon so the white is replaced by gray, and you've turned Do Not Disturb off. On this page, you can also see how Do Not Disturb may have turned on in the first place. Make sure that you don't have the mode scheduled, and that it isn't set to turn on automatically when you're driving. For more information on how Do Not Disturb works, see our article, " How to use Do Not Disturb on iPhone manually, or schedule it to activate at a specific time each day.

While your iPhone's volume being muted won't keep calls from coming through, it does make it harder to hear calls when you receive them. Adjust the slider beneath the "Ringer and Alerts" header to your desired volume — as you slide your finger along, the phone will play a short sound showing how loud the ringer will be.

If you've perhaps turned off your volume because you're receiving too many calls from spammers, check out our article, " How to stop robocalls and other spam calls from reaching your iPhone. If you can't find anything in your settings that would send a call straight to voicemail, your iPhone might simply need to be refreshed. You should try restarting it to work out the kinks. To learn how to restart any iPhone model, check out our article, " How to restart and force-restart any iPhone model.

Again, while running an outdated version of iOS doesn't necessarily mean you'll experience this problem, Apple advises that whenever you're having trouble with your device, you should make sure you're fully updated.

If none of the above methods work, it's worth checking in with your cell service provider to see if they're experiencing any system-wide issues. If they are, that might explain why your calls are being sent straight to voicemail.

If there aren't any problems, it might be time to contact Apple for further support. Are you using Call Blasting? If call blasting is enabled on your account, then all call-forwarding numbers listed under any given extension must have their settings configured identically in order to work properly otherwise, something like a short ring time on one call-forwarding number could be impacting the other call-forwarding number on the extension.

Learn how to check the call-forwarding settings. Is your phone number listed more than once for an extension? Is your Grasshopper phone number blocked on your phone?

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Dave Johnson. Incoming calls on your Android may go straight to voicemail for several reasons, including issues with your phone's SIM card or its Bluetooth and Do Not Disturb settings. There are five quick and easy ways you can troubleshoot when your calls are going straight to voicemail.

If none of these fixes work, you should reach out to your cellular service provider for assistance. Visit Business Insider's Tech Reference library for more stories. Dave Johnson is a technology journalist who writes about consumer tech and how the industry is transforming the speculative world of science fiction into modern-day real life. Dave grew up in New Jersey before entering the Air Force to operate satellites, teach space operations, and do space launch planning.